Fountain pen



Oct. 13 1925.

H. GORNELL FOUNTAIN PEN Filed Sept. 14 1925 i# l Q7 E? Wig?.

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UNITE HERBERT GORNELL, F TWICKENHIVI, ENGLAND.

. FOUNTAIN PEN.

Application filed September 14, 1923. Serial No. 662,689.

a subject of the King of Great Britain,

CIK

and a resident of Twickenham, Middlesex, England, have invented acertain new and useful Improvement in or Relating to Fountain Pens, ofwhich the following is a specitication.

This invention relates to kfountain pens and more particularly tofountain pens o-f the kind in which filling means are incorporated inthe structure thereof so that the usual filling squirt or syringe may bedis` pensed with.

One object of the invention is the provision of improvements inconnection with such filling means.

Another object is the provision of such filling means in afountain penof the safety type (i. e. a fountain pen in which the nilo is adapted tobe withdrawn to a safety position within the pen). n

Other objects and advantages will appear hereinafter.

The "invention may be said to consist broadly in the arrangementaccording to which ink is adapted to be drawn in at the nib end of thepen in response to the movement of a longitudinally1 reciprocable pistontowards said nib end of the pen.

An embodiment of the invention is illustrated in the accompanyingdrawing and same will now be described, it being understood that theparticular construction illustrated is susceptible of variousmodifications without departing from the scope of the appended claims.

In the drawings Figure 1 is a central sectional view of a fountain penconstructed in accordance with my invention.

Figure 2 is a detail sectional View of the cap.

In the drawing 1 is the main body or barrel, 1a is the usual end cap and2 is.

the nib. The said main body or barrel is constructed with an open end atthe end remote from the nib and this open end is closed by means of aclosed hollow cylinder 4 and collar 24, said hollow cylinder extend` inglongitudinally within said Pbarrel as shown.

The extreme end of the boss 5, as shown is of the same diameter as isthe barrel 1 and forms virtually a continuation there of. Also it willbe seen that the hollow cylinder is of such diameter that an annularclearance 8 is left between the same and the internal periphery of thebarrel.

Passing axially into the cylinder 4 is a piston rod 9, said piston rodforming sliding fluid tight joints with the end of said cylinder byvirtue of suitable packing 11; and this piston rod bears the piston 13in response to the sliding of which within the cylinder'4 the ink isadapted to be drawn into the pen. The piston rod terminates at its outerend in an operating knob or Landle 14 (which is of the same diameter asthe boss and is adapted to be screwed into engagement therewith).

At or near to the end of the cylinder 4 remote from the nib, saidcylinder is afforded communication with the surrounding annular space 8by means of a small orifice 16 and the portion of the cylinder to thenib side of the piston is afforded cominunication with the atmosphere(the cap 1tl having' the usual ventilation holes) by means of al passage17 passing longitudinally through the piston rod and operating handle inthe manner shown. The whole of the space within the barrel outside ofthe closed cylinder 4 is preferably of the same or substantially thesaine volume as is the interior of said closed cylinder 4.

The closed cylinder 4 is rotatably inounted in the barrel 1 of the penand it is by rotation of said cylinder that the nib is adapted to hewithdrawn to its safety position and returned to its operative position.For this purpose the said cylinder 4 extends integraL ly in the forni ofa sheath 18 and within said sheath 18 the bearing end 19 of the nib feedrod 20 is adapted to reciprocate. In the inner periphery of the penbarrel 1 adjacent this sheath 18 is cut a longitudinal groove 21, and ahelical slot- 22 of the same projected length is cut in the sheath 18. Atransverse pin 23 passes from the groove 21 through the slot 22 to theinterior of the sheath 18 where it is rigidly secured to the bearing end19 of the feed rod.

Thus when the cylinder 4 is rotated the it is necessary to provide afixing collar 24 screwed or otherwise secured within the open end of thepen barrel, and it is also necessary for reasons that will be obviousthat the enlarged boss should be separately secured to and not madeintegral with the cylinder L1. It is thought that the other details ofthe construction will be suiiiciently obvious from the drawing.

lhe manner in which the pen is to be `lled is obvious. The operatinghandle 14 is unscrerfed from the boss 5 and is drawn together with thepiston 1?) outwardly to the extreme end of its stroke remote from thenib.

This has the eifect of forcing the air which was within the cylinderthrough the orifice 16 and into the remainder of the interior of the penbarrel, with the result that the air which was in the barrel, togetherwith any remaining drops of ink, is forced out through the pen nib. Thenib end of the pen is then dipped into an inl; well and the operatinghandle 1li is depressed together with the piston 13 to the extreme endof its stroke nearest to the nib; and this last operation has the effectof sucking air back from the barrel interior through the orifice 16 intothe cy inder t and therefore of sucking ink from theY inkwell throughthe nib and into the interior of the barrel. Then the operat ing knob isagain screwed into engagement with the boss 5.

The part played by the passage 17 during this operation is that ofobviating the necessity of creating compression or suction within thepart of the cylinder on the nib side of the piston7 as would obviouslybe the case if this part of the cylinder were completely closed.

.member having an annular shoulder engaging with said collar to preventsaid cylindrical member moving` longitudinally towards the butt end ofVthe pen, a second collar secured on the outside of said hollowcylindrical member, ata part thereof which is outside said holder, saidsecond collar forming manually operated means for rotating' saidcylindrical member, packing to prevent flow of fluid from the annularspace between said cylindrical member and said.

holder past said collars to the atmosphere, a piston and piston rod forsaid hollow cylindrical member, said hollow cylindrical member having anopening between said annular space and the interior of said hollowcylindrical member adjacent the butt end of said annular space andhollow interior, so that by moving said piston to the nib end of saidcylindrical member ink may be sucked into said holder through the nibend thereof and an operative connection formed between said cylindricalmember and said pen nib, such that rotation of said cylindrical memberwithin said holder in reverse directions respectively effects movementof said nib to and from an operative position and a protected positionwithin said holder.

In witness whereof I aiiiX my signature.

HERBERT GORNELL.

